Lubricant compressor



' Aug. 7, W26,

2 Smets-Sheet 2 DQ Qu W DAVIS LUBRLCANT COMPRESSOR Flled Nov 10, 1924 llatented .divulga "ll,

rara r orties.

lEllFtNlElS'll' W. DAVIS, OF UAH. PARK, ILLINOIS, ASSIGNOB, T0 THE BASSIK MANUFAC- TURIN@ COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION Ol? DELAWARE.

numarcan'r coivnennsso'1a.

Application tiled November 10, 1921i. Serial Il'o. 748,956.

ll/ly invention relates to improvements in lubricant compressors and is particularly concerned with the provision of a. novel type of lubricant compressor adapted to deliver .comparativelylarge quantities of lubricant under comparatively high pressure.

rll`he objects of my present invention are:

First, to provide a lubricant compressor comprising .a inder, a high pressure cylinder, means for displacing the lubricant from the low pressure cylinder into the high pressurecyhnder, and other means for expelling the lubricant from the high pressure cylinder;

Second, to provide a compressor, of the character described, comprising means for positively displacing the lubricant from the low pressure cylinder into the high presure cylinder; and

Third, to provide a compressor, such as described, that is simple in` construction, economical to manufacture and easy to operate.

@ther objects of my invention will appear as this description progresses, reference being had to the accompanying drawings, in f which Figure 1 is a central, longitudinal section through one embodiment of my invention; f

Figure 2 is an end elevation, partially in section; and

lligure 3 is a transversesection taken on line 3-3 oi Figure 1, this section being on an enlarged scale. l

Referring to the drawings, improved compressor comprises a suitable bed plate 5, of wood or any other desired material, to which is secured the base plate 6 by means of bolts 7 and nuts 8.

Projecting upwardly from the base plate (i, and preferably formed integrally therewith, is a' hollow casting, comprising the substantially disc-shaped part 9 and the cy lindrical part 10. The discshapedV part 9 has a circular depression formed in one face thereof for receiving one end ort the low pressure cylinder 11. lThe inner end of this cylinder is llanged inwardly, as shown at 12, rand bears against a gasket 13 seated in the depression in the member 9. 'This member Vhas'a centrally disposed, hollow, inwardly extending,` exteriorly threaded boss 14, o nto which is threaded the spider. 15, the edge .of which engages the flange 12 and clamps it dll Sil

low pressure container, 'or eylplace.

Vchamber is greater than that `and the gasket 13 to the disclshaped part 9. The disc-shaped part 9 acts as a closure for one end of the low pressure cylinder 11. The opposite end of this cylinder is closed by a suitable cap 1G that may be secured thereto by means of a pin A.and slot connection formed by the pin 17 and the bayonet slot 18, or in any other desirable manner.'` y

`A hollow boss.19` extends outwardly 4from the .disc-shaped member 9 and it and the l'hollow boss 14 form a bearing for the unthreaded .portion of the threaded piston rod 20. "An annular groove 21, formed in the piston rod 20, and the inner end of the set screw 22 prevent longitudinalmovement of the piston rod 20 relatively to the other parts of thefcompressor. A loclcnut 23 maybe used for locking the set screw 22 in An interiorly threaded. sleeve 24. is threaded upon the piston rod 20 and has assembled thereon the face plate 25, the cup leather 26 and the follower' plate 27. These elements are clamped upon the sleeve by means of the nut 28 and altogether form a piston that is reciproeable longitudinally ot the low pressure cylinder.

A crown ratchet wheel 29 is secured to the piston rod 20 `iust outside the hollow boss 19. A pin 30, extending through the hub of the ratchet wheel, secures thelatter to the threaded piston rod 20. The lextremey outer end of the piston rod 20 is bent lateralas shown at 31, and then bent so as to provide a handle portion 32 extending sub* stantially parallel with the threaded piston rod 20. by means of which the latter can be rotated to move the piston described above in either direction. The principal function of this handle is, however, to move the piston to a position where it is disengaged from the inner end ot the piston rod so Vthat it can be removed through the open end el the low tnvessure cylinder to permit the latter to he filled with lubricant.

The cylindrical portion 10 has a vertical bore extending therethrough, forming the high pressure cylinder 33 and the valve chamber 34. The diameter of the valve of the high pressure cylinder 33 and thus forms a valve seat 35, against which the valve 86 is held by means of the compression spring 37. The

outer end of this4 compression spring bears lll)` against one end of the threaded plug' 3S that closes the lower 'end of .the valve chamber. This plug is preferably providedwith wings 39, by means ot which it can be removed .when desired. llie-valve 36 is polygonal inv cross'section, as indicated in Figure 3, so as to provide clearance spaces Abetween its periphery andv the walls ot the valve chamber' through which the lubricant expelled from thehigh` pressure cylinder 33 can be dis'- charged. The lubricant passes -t'rom 'the valve chamber 34 through the discharge port 40. lt can be conducted trom this port to any desired poiilby means ot the discharge conduit 4l,l the inner end of which threads into the discharge port 40, or by anyv other desired means.

y The high. pressure cylinder 33l communicates with the low pressure cylinder through the intake port 42 and lubricantis discharged troni the high pressure cylinder by the reciprocahle plunger 43, the upper end ot which is 'biturcated -Tlie bifurcations 44 engage opposite sides of the lever `45 and i are preferably secured thereto by means of the pin 46. The lever 45 is mounted uponl the link 47 by means of the pivot pin 4S. The lower end of the link 4S is pivotally mounted upon the outer end et the bracket 49 that extends outwardly Jfrom the upper end of thecylindrical member 10.` An extension 5..ot the lever 45 is adapted to en- ,etage the front face of the link 47 andthus limit the upward movement ot the lever and the plunger-13. AThe lever 45 is provided with a handle 51. by means ot which it can be oscillated, 'and with a truss arch 52. that stiffens the lever 45 and at the saine time serves as a handle, by means of which the compressor can be carried from place to place. The pivot pin 46 extends outwardly Vpast oneof the bifurcations 44 and carries, at its outer end, the pawl 53 that is provided with a'projection 54 for engaging the teeth of the ratchet wheel 29. This pawl is rotatably mounted on the pin 46 and .is-eti'- set' from a vertical plane, as shown in Figure'l, so that `gravity tends to hold it in position lto engage the teeth ot the ratchet :wheel 29.

From the above description it will be apparent that when the handlelis moved upwardly, the port 42 is uncovered, thereby permitting lubricant.` that has previously been placed under pressure by the move-- ment of the pistou in thelow pressure cylinder, to be forced into the high pressure cylinder through the port 42. The upward movement ot the handle 5l -is accompanied by a corresponding,r upward movement of the` pin 46 and the pawl The engagement by the projection 54 of the pawl with one of the teeth' a5 causes the ratchet wheel to be rotated and the piston in the low pressure cylinder to be advanced toward the high pressure cylinder, thereby placing,r the liibricant in the low pressure cylinder under sutilcient pressure to torce it into the high pressure cylinder.

Upon pushingY downwardly upon the handle 5l, the plunger 43 first closes the. inlet poit 42 and` then displaces the lubricant from the high pressure cylinder into the valve chamber 34 and from the latter out through the discharge conduit 4l. The downward movement. of the handle 5l causes the pawl 53 to move into the position where the projection 54 can engage the nearest tooth 55, so that upon the, succeeding` upward movement ot the handle 5l, the piston in the low pressure cylinder will again be advanced to place the lubricant therein under pressure.

. While I have described. the details of construction ot the preferred embodiment of my invention, it is Ato be clearly understood that my invention is not limited to these. letails, but is capable'ot other adaptations and modifications within the scope ot the appended claims.

Having thus described my invention, what I. claim is:

l. A lubricantcompressor comprising a low pressure cylinder, a closure fior one end ot saidlow pressure cylinder` a high pres- 'siire'cylinder receiving-material from said low pressure cylinder formed Iintegrally with said closure'and disposed eccentrially of said low pressure cylinder, a threaded piston rod rotatably mounted in said 'closure and extending substantially the entire length ol said low pressure eyliinler, a piston threaded onto said piston rod, a ratchet ,wheel secured to the outer end ot said piston rod, a, plunger i'eciprocably mounted in said high pressure cylinder` a lever for reciprocating said plunger, and a pawl having one en d pivotally mounted upon s. id lever and its other end positioned to engage the teeth on said ratchet wheel. y

2.-A lubricant compressor comprising a low pressure cylinder, a closure for one end of said low pressure cylinder, a high pressure cylinder, a threaded piston rod iotatably mounted in said closure and extending substantially the entirel length ot said low pressure cylinder, a piston threaded onto said piston rod, a ratchet wheel secured to the outer end of said piston rod, a plunger reciprocably mounted in said high pressure cylinder, a lever tor reciprocating said plunger, and a pawi having one end pivotally mounted upon said lever and its other end lll) positioned to engage the teeth on saidV rei/aast l means in said low pressure cylinder including a central axial rotatable pistonrod projecting out ot' thevend of said cylinder past said high pressure cylinder', 4high pressure compressing means `in said high pressure cylinder', and a mechanical interconnection between said highl pressure compressing means andthe projecting end of said rod, said rod having an offset end portion -lorming a handle.

Ll-, A lubricant compressor comprising a high pressure cylinder body having a high pressure cylinder formed therein, said body having a transverse bore lying in a plane perpendicular to said highpressure cylinder and extending past beside the same, a pistqn rod in said transverse bore, a low pressure cylinder' at one end of said piston rod discharging into said high pressure cylinder, a low pressure piston in said cylinder actuated by said rod, high pressure compressing means in said high pressure cylinder, and a transmission vtrom said high pressure compressing means to the other end et said pistonrod', said transmission including externally accessible means for connecting and disconnecting it.

5. t lubricant compressor comprisinga body forming a high pressure cylinder and a closure member, said closure member lying in a plane parallel to but offset romthe p axls ol said hlgh pressure pylinder, a central boss on said closure member, a louT pressure cylinder having a flanged endconcentric with said boss,a spider` fastened on said boss for `clamping said flanged end to said closure member, a lovv pressure pistonrodv extending through 'and journaled in said boss, and compressing means actuated by said' rod, said low pressure cylinder' discharging into said high pressure cylinder.

ti. il, lubricant compressor comprising a closure, a cylinder clamped to said closure, a piston rod extending axially through said closure and inside said cylinder', a piston in said cylinder actuated by said rod, means tor expelling thecontents oi' saidw cylinder by rotating said rod to move said piston toward said closure, and means permitting Witbdra'vval oi said piston at the end opposite said closure to refill the' cylinder.

i". lubricant compressor comprising a cylinder, a piston rod andpistonin said cylinder', intermittent drive means at one end ot said cylinder for moving said rod and pist-on, high pressure discharge means for delivering the contents expelled from said cylinder upon movementof said piston toward said drive-means, and means permitting withdrau-'al of said piston at the end opposite said drive means to refill the cylinder.

il, de lubricant compressor comprising a cylinder, a piston rod and piston in said cylinder, drive means at one end of said cylen'tire device.

inder tormeving said rod and piston, discharge means tor high pressure delivery of the contents forced from said cylinder upon movement of said piston Atoward said drive means, and means permitting u'ithdrauutl of said piston Vfrom said rod at the end opposite said drive means to reiill the cylinder.l

,9. A lubricant compressor comprisinga container, means ior compressing the contents thereot', an operating lever for said compressing means extending across above said means andsaidI container,'interengaging stops on said lever and' a part attached to said container, anda stiil'ening truss for said lever lornring 'a handle for carrying the 10. l lubricant compressor comprising a container, means Jfor compressing the contents thereof, an operating lever for said compressing means, interengaging stops on said lever and a part attached to said con` tainer, and a stillening truss for said lever forming a handle 'lfor carrying the entire device.

l1, A compressor comprising a loW pressure cylinder, a transverse lhigh pressure cylinder, communicating `with said low pressure cylinder, a plunger in said high pressure cylinder, an operating lever parallel to said low pressure cylinder, a pintle connecting" said lever and plunger, a gravity pawl Y carried'by said pintle, a rotatable-ratchet driven by said paWl, a piston rod (3o-axial with said low pressure cylinder and supporting said ratchet, and a piston in said lowv pressure cylinder threaded on said rod.

12. A compressor comprising a low pres- 'lli sure cylinder, a high pressure cylinder, com- Y municating with" said. low pressure cylinder,

a plunger in said high pressure cylinder,

a gravity pavvlA operatively connected to said plunger, a rotatable ratchet driven by said pawl, compressing means in said lovv pressure cylinder, and a transmission-'trom said'ratchet to said compressing means.

13. A compressor comprising a 10W pressure c linder a transverse high oressure i 7 fr cylinder, communicating withsaid low pressure cylinder, a plunger in saidhigh pressure cylinder, an operating lever parallel to said low" pressure cylinder for moving said plunger, a pavvl carried by said lever, compressing meansin said loiv pressure cylinder, and a transmission 'from said paivl to said compressing means, 4

141-.. A compressor comprising a horizontal low pressure cylinder, a vertical high pressure cylinder, communicating with said low pressure cylinder, a plunger in said high pressure cylinder, a paWl operatively connected to said plunger, compressing means in said loiv pressure cylinder including a rotatable drive element, and a pa-Wl and ratchet connection'betvveen said plunger and said drive element lll() 15. A compressor comprising ai iow presf sure cylinder, a high pressure cylinder, said cylinders having a. common pori'I interconnecting them, a plunger.. in said high pres- 5 sure cvlinder for covering said port until the end of the intake stroke, a piston in said 10W pressureicylinder, and a positive mechanical ERNEST W. DAVIS. 

